Supernail ProGel Superbond is a non-acid gel bonding agent that is applied prior to ProGel Base Coat to help ensure maximize adhesion and longer wear. The formula doesn't need to be cured. Application should be a thin coat on nail and air dried. Perfect solution for those who have had problems with artificial nails breaking or falling off. Superbond should be used as the first step with ProGel gel polishes.